CN216909464U

CN216909464U - Front filter

Info

Publication number: CN216909464U
Application number: CN202123304821.9U
Authority: CN
Inventors: 刁统洋
Original assignee: Yangzhou Yuezheng Environmental Technology Co ltd
Current assignee: Jiangsu Pure Environment Technology Co ltd
Priority date: 2021-12-24
Filing date: 2021-12-24
Publication date: 2022-07-08
Anticipated expiration: 2031-12-24

Abstract

The utility model discloses a pre-filter, which comprises a shell, a water inlet, a water outlet and a sewage outlet which are arranged on the shell, and an outer filter element and an inner filter element which are arranged in the shell and are coaxially arranged, wherein the outer filter element comprises an outer filter screen and an outer base; the outer base is connected with a lifting device to drive the outer filter screen to move up and down in the shell. According to the utility model, the outer-layer filter element is lifted by the lifting device and is filtered together with the inner-layer filter element, so that the filtering precision is high, and the device is suitable for the situation with high water quality requirement; the outer filter element descends, water is filtered only through the inner filter element, the filtering precision is low, and the water quality filter is suitable for the situation with low requirement on water quality.

Description

Front filter

Technical Field

The utility model relates to a water purifying device, in particular to a pre-filter.

Background

Tap water passes through a plurality of pipelines before reaching each user through the pipe network, and a plurality of impurities such as silt, rust, suspended matters and the like exist in the pipelines, so that water pollution can be caused if the filtering treatment is not carried out. Leading filter is always used for the general inlet tube water inlet department of family, and the solid particle thing (the great particulate matter of particle size) in the preliminary filtration aquatic of purpose protects domestic appliance equipment safety. The pre-filter is adopted to filter at the source of the domestic water, so that the secondary pollution can be effectively eliminated, the water pollution diseases are reduced, solid impurities can be removed, the safety of a pipeline system is protected, and the system maintenance cost is reduced.

The filtering precision of the prior prefilter can not be changed, and the prefilter can not simultaneously meet the requirements of a high-filtering-precision use environment (such as drinking water) and a low-precision use environment (such as mopping water for bathing). In addition, if the filter element with high filtering precision is directly used in the prefilter, the water pressure is easily influenced, and the problem of blockage is easily caused.

SUMMERY OF THE UTILITY MODEL

Aiming at the problem that the filtering precision of the pre-filter cannot meet different use environments, the utility model provides the pre-filter, which is adjustable in filtering precision and meets different use environments.

In order to achieve the purpose, the utility model provides a pre-filter, which comprises a shell, a water inlet, a water outlet and a sewage outlet which are arranged on the shell, and an outer-layer filter element and an inner-layer filter element which are arranged in the shell and are coaxially arranged, wherein the outer-layer filter element comprises an outer-layer filter screen and an outer-layer base, the inner-layer filter element comprises an inner-layer filter screen and an inner-layer base, the diameter of the outer-layer filter screen is larger than that of the inner-layer filter screen, and the water inlet is communicated with the inside of the inner-layer filter screen;

be connected with elevating gear on the outer base, in order to drive outer filter screen is in reciprocate in the shell, and then make outer filter screen can overlap and establish on the inlayer filter screen or be located the below of inlayer filter screen, the top of outer filter screen with the airtight butt of outer wall of inlayer filter screen, just the external diameter of inlayer base is greater than the external diameter of inlayer filter screen, so that the inlayer base can with the top butt of outer filter screen.

Preferably, elevating gear includes the pressure spring, acts as go-between and winding reel, the pressure spring both ends are fixed respectively the bottom of outer base with the bottom of shell, act as go-between one end is fixed the bottom of outer base, the other end are convoluteed on the winding reel, be equipped with the confession on the drain the through-hole that the winding reel passed, on the drain the opposite face of through-hole is equipped with the holding the storage tank of the interior end of winding reel, be equipped with the sealing washer in the through-hole.

Preferably, the outer end of the winding reel is provided with a strip-shaped handle, and the outer wall of the through hole is provided with a groove capable of accommodating the handle.

Furthermore, the winding part of the winding reel is flat in the same direction with the handle.

Preferably, elevating gear including fix the guide bar of shell bottom, with outer base threaded connection's lead screw, outer base is equipped with the confession the guiding hole that the guide bar passed, be fit for in the sewage disposal mouth can pivoted blowdown mouth, the fixed dead lever that is equipped with in top of blowdown mouth, the bottom of lead screw with dead lever fixed connection.

Further preferably, the outer wall of the sewage draining nozzle and/or the fixing rod is/are clamped with the inner wall of the sewage draining outlet, and a sealing ring is arranged between the sewage draining nozzle and the sewage draining outlet.

Preferably, the filtration pores of the outer layer of the screen are smaller than the filtration pores of the inner layer of the screen.

Preferably, the housing is a transparent housing.

Through the technical scheme, the utility model has the following beneficial effects:

according to the utility model, the outer-layer filter element is lifted by the lifting device and is filtered together with the inner-layer filter element, so that the filtering precision is high, and the device is suitable for the situation with high water quality requirement; the outer filter element descends, water is filtered only by the inner filter element, the filtering precision is low, and the filter is suitable for the situation that the water quality requirement is not high.

Drawings

FIG. 1 is a schematic view of a first embodiment of a prefilter of this invention in one of its states of use;

FIG. 2 is an enlarged schematic view at A in FIG. 1;

FIG. 3 is a schematic view of another use of the first embodiment of the prefilter of this invention;

FIG. 4 is a schematic view of another use of the second embodiment of the prefilter of this invention;

FIG. 5 is a schematic view of another use state of the second embodiment of the prefilter of this invention.

Description of the reference numerals

1 water inlet, 2 water outlet and 3 outer shell

41 inner filter element, 411 inner filter screen, 412 inner base, 42 outer filter element, 421 outer filter screen, 422 outer base, 423 guide hole, 431 guide rod, 432 screw rod, 433 compression spring, 434 pull wire, 435 winding reel, 436 handle

5 sewage discharge port, 51 sewage discharge nozzle, 52 fixing rod, 53 through hole, 54 accommodating groove and 55 groove

The arrows in the figure indicate the direction of water flow

Detailed Description

The following detailed description of embodiments of the utility model refers to the accompanying drawings. It should be understood that the detailed description and specific examples, while indicating the present invention, are given by way of illustration and explanation only, not limitation.

It should be noted that, in the following description, for clarity of explanation of the technical solution of the present invention, directional terms, such as "outer", "inner", "upper", "lower", and the like, are used according to the meaning of the components in the filter, such as the axial direction of the filter is inner, the position opposite to the axial direction of the filter is outer, the water inlet of the filter is located at the upper position, and the sewage outlet is located at the lower position. This is done solely for the purpose of facilitating the description of the utility model and simplifying the description, and is not intended to indicate or imply that the device or element so referred to must be in a particular orientation, constructed and operated, and therefore should not be taken as limiting the utility model.

In the description of the present invention, it should be noted that, unless otherwise explicitly stated or limited, the terms "mounted" and "connected" are to be interpreted broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected; either directly or indirectly through intervening media, either internally or in any combination thereof. The specific meanings of the above terms in the present invention can be understood by those skilled in the art according to specific situations.

As shown in fig. 1 to 5, the prefilter of the present invention comprises a housing 3, a water inlet 1, a water outlet 2 and a sewage outlet 5 which are arranged on the housing 3, and an outer filter element 42 and an inner filter element 41 which are arranged in the housing 3 and coaxially, wherein the outer filter element 42 comprises an outer filter screen 421 and an outer base 422, the inner filter element 41 comprises an inner filter screen 411 and an inner base 412, the diameter of the outer filter screen 421 is larger than that of the inner filter screen 411, and the water inlet 1 is communicated with the inside of the inner filter screen 411; the outer screen 421 and the inner screen 411 have different sizes of openings.

Be connected with elevating gear on outer base 422, in order to drive outer filter screen 421 is in reciprocate in the shell 3, and then make outer filter screen 421 can overlap and establish on the inlayer filter screen 411 or be located the below of inlayer filter screen 411, the top of outer filter screen 421 with the airtight butt of outer wall of inlayer filter screen 411, just the external diameter of inlayer base 412 is greater than the external diameter of inlayer filter screen 411, so that inlayer base 412 can with the top butt of outer filter screen 421.

In the utility model, the outer-layer filter element 42 is lifted by the lifting device and is filtered together with the inner-layer filter element 41, so that the filtering precision is high, and the device is suitable for the situation with high water quality requirement; the outer filter element 42 descends, water is filtered only through the inner filter element 41, the filtering precision is low, and the water quality requirement is not high. The utility model has adjustable filtering precision, meets different use conditions and prolongs the service life of the filter.

The following are some embodiments of the lifting device of the present invention.

Example 1

As shown in fig. 1 to 3, the lifting device includes a pressure spring 433, a pull wire 434 and a winding reel 435, two ends of the pressure spring 433 are respectively fixed at the bottom of the outer base 422 and the bottom of the housing 3, one end of the pull wire 434 is fixed at the bottom of the outer base 422, the other end of the pull wire is wound on the winding reel 435, a through hole 53 for the winding reel 435 to pass through is formed in the sewage outlet 5, a containing groove 54 for containing an inner end of the winding reel 435 is formed in a surface of the sewage outlet 5 opposite to the through hole 53, and a sealing ring 531 is arranged in the through hole 53. In this embodiment, when the winding reel 435 is screwed and the pull wire 434 is loosened, the pressure spring 433 pushes the outer filter element 42 toward the inner filter element 41, and the inner filter screen 411 and the outer filter screen 421 perform filtering operation simultaneously; spool 435 is rotated in the opposite direction and pull wire 434 is wound around spool 435 to disengage outer filter element 42 from inner filter element 41, while only inner filter element 41 is performing filtration. A drain valve (not shown in the figure) is arranged below the wire winding drum 435 on the drain outlet 5.

In order to fix the position of the winding reel 435, an elongated handle 436 is disposed at an outer end of the winding reel 435, a groove 55 capable of accommodating the handle 436 is disposed on an outer wall of the through hole 53, and the length of the pull wire 434 is related to the length of the pull wire, so that the elongated handle 436 can be just placed in the groove 55 when the outer filter element 42 is completely separated from the inner filter element 41. In this case, a pull tab may also be provided on the handle 436 to facilitate pulling the handle 436 out of the recess 55 when it is desired to rotate the handle 436.

As a further preferable embodiment of this embodiment, the winding part of the spool 435 is flat in the same direction as the handle 436 to minimize interference with the sewage.

Example 2

As shown in fig. 4-5, the lifting device includes a guide rod 431 fixed at the bottom of the housing 3, and a screw rod 432 in threaded connection with the outer base 422, the outer base 422 is provided with a guide hole 423 for the guide rod 431 to pass through, a rotatable sewage discharge nozzle 51 is adapted in the sewage discharge outlet 5, a fixed rod 52 is fixedly arranged at the top of the sewage discharge nozzle 51, and the bottom end of the screw rod 432 is fixedly connected with the fixed rod 52. In this embodiment, when the position of the outer filter element 42 needs to be adjusted, the dirt discharging nozzle 51 is rotated to drive the fixing rod 52 and the screw rod 432 fixed on the fixing rod 52 to rotate, so that the outer base 422 moves linearly on the screw rod 432. The waste nozzle 51 is provided with a waste valve (not shown).

Preferably, the outer wall of the sewage draining nozzle 51 and/or the fixing rod 52 is clamped with the inner wall of the sewage draining exit 5, and a sealing ring is arranged between the sewage draining nozzle 51 and the sewage draining exit 5 to ensure the sealing property.

In a preferred embodiment of the present invention, the filtering holes of the outer screen 421 are smaller than the filtering holes of the inner screen 411. In this case, when only the inner filter element 41 performs filtering operation, coarse-filtered water enters the outer filter screen 421 through the outer filter screen 421, so that filter residues are adhered to the outer wall of the outer filter screen 421, but the water entering the outer filter screen 421 does not flow, and the filter residues are very little; during fine filtration (i.e., simultaneous filtration in the outer filter element 42 and the inner filter element 41), some water is properly drained, so that the filter residue on the outer wall of the outer filter screen 421 is washed, and then high-quality water after fine filtration is obtained.

The shell 3 is a transparent shell so as to conveniently view the internal condition of the filter.

The preferred embodiments of the present invention have been described in detail with reference to the accompanying drawings, however, the present invention is not limited to the specific details of the above embodiments, and various simple modifications may be made to the technical solution of the present invention within the technical idea of the present invention, and these simple modifications all fall within the protection scope of the present invention.

It should be noted that the various technical features described in the above embodiments can be combined in any suitable manner without contradiction, and the utility model is not described in any way for the possible combinations in order to avoid unnecessary repetition.

In addition, any combination of the various embodiments of the present invention is also possible, and the same should be considered as the disclosure of the present invention as long as it does not depart from the spirit of the present invention.

Claims

1. The pre-filter is characterized by comprising a shell (3), a water inlet (1), a water outlet (2) and a sewage outlet (5) which are arranged on the shell (3), and an outer-layer filter element (42) and an inner-layer filter element (41) which are coaxially arranged in the shell (3), wherein the outer-layer filter element (42) comprises an outer-layer filter screen (421) and an outer-layer base (422), the inner-layer filter element (41) comprises an inner-layer filter screen (411) and an inner-layer base (412), the diameter of the outer-layer filter screen (421) is larger than that of the inner-layer filter screen (411), and the water inlet (1) is communicated with the inside of the inner-layer filter screen (411);

be connected with elevating gear on outer base (422), in order to drive outer filter screen (421) are in reciprocate in shell (3), and then make outer filter screen (421) can overlap and establish on inlayer filter screen (411) or be located the below of inlayer filter screen (411), the top of outer filter screen (421) with the airtight butt of outer wall of inlayer filter screen (411), just the external diameter of inlayer base (412) is greater than the external diameter of inlayer filter screen (411), so that inlayer base (412) can with the top butt of outer filter screen (421).

2. The prefilter of claim 1, wherein the lifting device comprises a pressure spring (433), a pull wire (434) and a winding reel (435), two ends of the pressure spring (433) are respectively fixed at the bottom of the outer base (422) and the bottom of the housing (3), one end of the pull wire (434) is fixed at the bottom of the outer base (422), the other end of the pull wire is wound on the winding reel (435), a through hole (53) for the winding reel (435) to pass through is arranged on the sewage outlet (5), a containing groove (54) for containing the inner end of the winding reel (435) is arranged on the opposite surface of the through hole (53) on the sewage outlet (5), and a sealing ring (531) is arranged in the through hole (53).

3. The prefilter of claim 2 wherein the outer end of said spool (435) is provided with an elongated handle (436), and the outer wall of said through hole (53) is provided with a groove (55) capable of receiving said handle (436).

4. The pre-filter of claim 3, wherein the spool (435) is flat with a coiled portion in the same direction as the handle (436).

5. The prefilter of claim 1 wherein said lifting means comprises a guide rod (431) fixed at the bottom of said housing (3), a screw rod (432) in threaded connection with said outer base (422), said outer base (422) having a guide hole (423) for said guide rod (431) to pass through, said sewage outlet (5) having a rotatable sewage nozzle (51) fitted therein, said sewage nozzle (51) having a top fixed with a fixed rod (52), said screw rod (432) having a bottom fixed with said fixed rod (52).

6. The prefilter of claim 5 wherein the outer wall of said sewage discharge nozzle (51) and/or said fixing rod (52) is/are snap-fitted to the inner wall of said sewage discharge opening (5), and a sealing ring is provided between said sewage discharge nozzle (51) and said sewage discharge opening (5).

7. A pre-filter according to any of claims 1-6, characterised in that the filter holes of the outer filter screen (421) are smaller than the filter holes of the inner filter screen (411).

8. The pre-filter according to any of the claims 1 to 6, characterised in that the housing (3) is a transparent housing.